Multiple Choice
Suppose that in unicorns, two autosomal loci, A and B, assort independently. If a unicorn with genotype AaBb is crossed with aabb, what proportion of the offspring are expected to have the genotype aabb?
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2. Mendel's Laws of Inheritance
Mendel's Experiments and Laws
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Breeding two pure-lines of yellow-seeded flowers will always produce yellow-seeded offspring
A
True
B
False
Verified step by step guidance1
Understand the concept of pure-line breeding: Pure-line organisms are homozygous for a particular trait, meaning they have two identical alleles for that trait.
Identify the genetic makeup of the yellow-seeded flowers: If the flowers are pure-line, they are homozygous for the yellow seed trait, which can be represented as YY.
Consider the inheritance pattern: When two homozygous organisms (YY) are crossed, all offspring will inherit one allele from each parent, resulting in offspring that are also homozygous (YY).
Recognize the dominance of the trait: If yellow is the dominant trait, all offspring will express the yellow-seeded phenotype.
Conclude the outcome: Since both parents are homozygous for the yellow trait, all offspring will be yellow-seeded, confirming the statement as true.
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